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- Bivi Bag - Heatshield
It reflects and retains over 90% of radiated body heat.
This Lifesystems Bivi bag is ideal for endurance racers or outdoor enthusiasts alike.
Strong, metallised low density polyethylene with taped seams
Windproof, waterproof and radar reflective
Provided with a compact storage sack
Dimensions (packed): 70 x 60 x 60mm
Dimensions (unpacked): 210 x 90cm
1 reviewsCarl • 26/08/2020
"Don’t believe the hype"
Anyone thinking of carrying a reflective blanket or bag instead of real insulation needs to understand that they don’t reflect body heat, except from BARE skin. If you’re naked, and somehow manage to avoid the blanket touching you it can reflect some heat, but if you’re wearing any clothes heat is not lost through radiated energy, but via convection and conduction, which a reflective blanket doesn’t stop. Covering yourself with any windproof layer will keep you warmer, but only insulation like a quilt or sleeping bag will really hold in body heat.
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